1977 Dodge Ramcharger OE Wiring Harnesses & Stereo Dodge Ramcharger 1977, Aftermarket Radio Wiring Harness by Scosche®, with OEM Plug, Pre-Terminated with Butt Connectors. Up yourself and your tunes over the factory installation with top-of-the-line audio products from Scosche. engine wiring harness - Dodge Ram, Ramcharger, Cummins I have a 1987 ramcharger. and i have the lean burn wiring harness with the scc and the 50 point connector. I was wondering if i could get an older style harness (with the ballast resistor and an ecu) out of a different year ramcharger w/o changing the dash harness. Because i want to eliminate alot of the wires and just make stuff simpler. Thanks.